Ampere's law is applicable to:

Explanation

Ampere's law is a fundamental principle in electromagnetism and is applicable to any closed path. It states that the line integral of the magnetic field (B) around a closed path (also known as a closed loop) is equal to the product of the total current passing through the enclosed area and the permeability of the medium.Mathematically, Ampere's law can be expressed as:∮ B · dl = μ₀ * Σ IWhere:∮ B · dl represents the line integral of the magnetic field B around the closed path.μ₀ (mu naught) is the permeability of free space, approximately 4π x 10^-7 T·m/A.Σ I represents the algebraic sum of the currents passing through the enclosed area by the closed path.The closed path can be of any shape, such as a circle, rectangle, square, or any arbitrary closed curve. As long as the path forms a closed loop and encloses an area, Ampere's law is applicable. It provides a powerful tool for calculating magnetic fields in various scenarios, especially in cases where there is symmetry in the current distribution.